html {
  /* 占击导航栏的时候，让页面平稳向下移动的动画效果 ,ie 10 以上才支持 */
  scroll-behavior: smooth;
}
/* utility classes 实用通用类 */
.text-primary {
  /* 设置图标书的颜色 */
  color: #93cb52;
}
.long-shadow {
  display: inline-block;
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
  padding: 25px;
  border: none;
  font: normal 60px/1 "Fredoka One", Helvetica, sans-serif;
  color: #ffffff;
  text-align: center;
  -o-text-overflow: clip;
  text-overflow: clip;
  text-shadow: 3px 3px 0 #0199d9, 4px 4px 0 #0199d9, 5px 5px 0 #0199d9, 6px 6px 0 #0199d9, 7px 7px 0 #0199d9, 8px 8px 0 #0199d9, 9px 9px 0 #0199d9, 10px 10px 0 #0199d9, 11px 11px 0 #0199d9, 12px 12px 0 #0199d9, 13px 13px 0 #0199d9, 14px 14px 0 #0199d9, 15px 15px 0 #0199d9, 16px 16px 0 #0199d9, 17px 17px 0 #0199d9, 18px 18px 0 #0199d9, 19px 19px 0 #0199d9, 20px 20px 0 #0199d9;
}
.l-heading {
  font-size: 3vw;
  margin-bottom: 30px;
  line-height: 1.1;
}
.m-heading {
  font-size: 2rem;
  margin: 0.75rem;
  line-height: 1.1;
}
/* navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  background-color: #2d66b6;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 8;
  padding: 1rem;
}
.navbar ul {
  display: flex;
  color: #fff;
  align-items: center;
}
.navbar ul a {
  color: #ffffff;
  padding: 0.75rem;
  margin: 0 0.25rem;
}
.navbar ul a:hover {
  background-color: #93cb52;
  border-radius: 5px;
}
/* 这里是home页面的样式 */
#home {
  background: url("../img/home1.png") no-repeat center center / cover;
  height: 80vh;
  color: #fff;
  position: relative;
}
#home .home-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  align-items: center;
  padding: 0 2rem;
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.3);
}
/* go-train-btn */
.go-train-btn {
  font-size: 18px;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: inline-block;
  text-align: center;
  font-weight: bold;
  padding: 0.7em 2em;
  border: 3px solid #bbff00;
  border-radius: 2px;
  position: relative;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.1);
  color: #00ff5e;
  text-decoration: none;
  transition: 0.3s ease all;
  z-index: 1;
}
.go-train-btn:before {
  transition: 0.5s all ease;
  position: absolute;
  top: 0;
  left: 50%;
  right: 50%;
  bottom: 0;
  opacity: 0;
  content: '';
  background-color: #b3ff00;
  z-index: -1;
}
.go-train-btn:hover,
.go-train-btn:focus {
  color: #000000;
}
.go-train-btn:hover:before,
.go-train-btn:focus:before {
  transition: 0.5s all ease;
  left: 0;
  right: 0;
  opacity: 1;
}
.go-train-btn:active {
  transform: scale(0.9);
}
/* who */
.who-title {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin: 20px;
}
/* card */
.card {
  position: relative;
  width: 100%;
  height: 320px;
  background: #ccecea;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 25px;
  font-weight: bold;
  cursor: pointer;
}
.card .text-content {
  width: 50%;
  font-size: 12px;
  padding: 10px;
  z-index: 1;
  color: #000000;
}
.card .text-content .title {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 10px;
}
.card::before,
.card::after {
  position: absolute;
  content: "";
  width: 20%;
  height: 20%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 25px;
  font-weight: bold;
  background: #50e4ee;
  transition: all 0.5s;
  z-index: 0;
}
.card::before {
  top: 0;
  right: 0;
  border-radius: 0 0px 0 100%;
}
.card::after {
  bottom: 0;
  left: 0;
  border-radius: 0 100% 0 0px;
}
.card:hover::before,
.card:hover::after {
  width: 100%;
  height: 100%;
  transition: all 0.5s;
}

#down {
  background: linear-gradient(to right, #94e3fd, white);
}
.down-title {

    width:90%;
    
  font-size: max(2.5vw, 20px);
  font-weight: bold;
  text-align: center;
  padding-top: 30px;
  padding-bottom: 20px;
  padding-left: 100px;
  padding-right: 100px;
  color: #000000;
  box-sizing: border-box;
  border-bottom: 1px solid #cacaca;
  text-shadow: 1px 0px 1px #ffffff, 0px 1px 1px #EEEEEE, 2px 1px 1px #ffffff, 1px 2px 1px #ffffff, 3px 2px 1px #ffffff, 2px 3px 1px #ffffff, 4px 3px 1px #CCCCCC, 3px 4px 1px #EEEEEE, 5px 4px 1px #CCCCCC, 4px 5px 1px #EEEEEE, 6px 5px 1px #CCCCCC, 5px 6px 1px #EEEEEE, 7px 6px 1px #CCCCCC, -11px 9px 1px rgba(206,89,55,0.04);
  margin: 0 auto; /* 水平居中 */

}
/* #down .downdis {
  text-align: center;
  margin-top: 10px;
  margin-bottom: 20px;
} */
.down-parent {
  width: 100%;
  display: flex;
  margin-top: 30px;
}
.down-parent .left {
  width: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
.down-parent .left .down-cards {
  display: flex;
  flex-direction: row;
  gap: 1vw;
  padding: 1vw;
}
.down-parent .left .down-cards .one {
  background-color: #007e9e;
}
.down-parent .left .down-cards .two {
  background-color: #0062ff;
}
.down-parent .left .down-cards .three {
  background-color: #18cd5e;
}
.down-parent .left .down-cards .down-carditm {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  border-radius: 10px;
  color: white;
  cursor: pointer;
  transition: 400ms;
  max-width: 200px;
}
.down-parent .left .down-cards .down-carditm:hover {
  transform: scale(1.2, 1.2);
}
.down-parent .left .down-cards:hover .down-carditm:not(:hover) {
  filter: blur(10px);
  transform: scale(0.9, 0.9);
}
.down-parent .left .card2 {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 700;
  padding: 30px 8px;
  color: #ffffff;
  border-radius: 45px;
}
.down-parent .left .card2 .header {
  margin-top: 5vw;
}
.down-parent .left .app-icon {
  pointer-events: none;
  width: 70%;
  height: auto;
}
.down-parent .left .App-button {
  padding: 10px 20px;
  background-color: transparent;
  color: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  font-size: 15px;
  border: 3px solid #ffffff;
  border-radius: 5em;
  margin-top: 20px;
  margin-bottom: 2vw;
  transition: 0.2s;
}
.down-parent .left .App-button:hover {
  color: #191e24;
  background-color: #FFE052;
}
.down-parent .right {
  width: 50%;
  display: flex;
}
.down-parent .right img {
  width: 100%;
  height: auto;
  object-fit: cover;
  margin: auto;
}
/* footer */
#main-footer {
  text-align: center;
  background-color: #4274b2;
  color: #fff;
  padding: 30px 0;
}
